So I've been thinking of parting ways with my magnaflow catback for quite some time now and moving to a custom exhaust to fit quads in the back with a new diffuser. To my understanding 3.0 seems to be the average size for the tips on quads, but was wondering if there has been people that went any bigger to give it a more aggressive/filled in look (please post your pics)

Right now I'm like this (with different rims that aren't black anymore)

I 'm thinking of going to this:

But want to see what my other options are (bigger/different finishes?)

im looking to redo my tips, from a single to dual tips (like yours pictured above, not dual exhaust/quad tips). but trying to see the largest size that would fit in the stock 328i mtech bumper diffusor.

im looking to redo my tips, from a single to dual tips (like yours pictured above, not dual exhaust/quad tips). but trying to see the largest size that would fit in the stock 328i mtech bumper diffusor.

are those 3" tips in that picture of your setup?

so I'm slightly confused on your question, so you want to change your dual pipes that come on stock on the 328 to just one single tip like one side of a 335?